Computer data (1 file for each state : records)

Computer reel + codebook + machine-readable documentation.

Title from codebook which also includes : Technical documentation.

Other information supplied by contact person.

"5% and 1/10,000 sample."

File contains two record types : housing record and person record, each consisting of 231 characters of data. Each housing unit record is followed by a variable number of persons records, one for each occupant. Vacant housing units will have no person record, and selected persons in group quarters will have a dummy housing record and a person record.

Universe : All persons and housing units in the United States.

Public use microdata samples (PUMS) contain records representing 5% samples of the housing units in the United States and the persons in them. Selected group quarters persons are also included. The file contains individual weights for each person and housing unit which, when applied to the individual records, expand the sample to the total population.

Each PUMS file provides records for States and many of their geographic levels. The 5% sample identifies every State and various subdivisions of States called : Public use microdata areas. each with at least 100,000 persons. None of these PUMAS on the 5% sample crosses state lines.

Public use microdata samples, United States.

Census of population and housing, 1990 : public use microdata samples.

Housing > United States > Statistics.

United States > Census, 1990.

United States > Population > Statistics.